Tank-alarm.



No. 864,959. PATENTED SEPT. 3, 1907. G. P. ELLIOTT.

TANK ALARM.

APPLIOATION FILED 311.20. 1907.-

2 SHEETS-SHEET l,

lnueufo-c ,7 EZZZaZf No. 864,959. PATENTED SEPT. a, 1907. G. F. ELLIOTT.

TANK ALARM.

APPLIOATIOH FILED APB..20. 1907.

2 SHEETSSHEET 2.

ITgJE- e. fdazf Witnmu 7 4 6 $3M V UNITED STATES PATEN T OFFICE.

TANK-AL. ARM.

Specification of Letters Patent.

Patented Sept. 3, 1907.

1 Application filed April 20,1907. Serial 110369.277.

To all whom it may concern:

Be it known that I, GLEN F. ELLIOTT, a citizen of the United States, residing at Delmar, in the county of Sussex, State of Delaware,have invented certain new and useful Improvements in Tank-Alarms; and 1 do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to tank alarms and more particularly to that class which are employed in connec-' weight. This weight is provided with two contacts.

which are designed for contact, either when the tank is full or empty, with second contacts and thereby close an electric circuit in which is interposed a bell, or other indicating device.

In the accompanying drawings, Figure 1 is a view in elevation of a tank showing the application of the alarm thereto, Fig. 2 is a sectional view taken verti (ally and centrally through the tank and casing for the mechanism, Fig. 3 is a detail perspective view of the weight which carries the contact members, Fig. 4 is a similar view of one of the fixed contact members, and, Fig. 5 is a diagrammatic view of the alarm circuit.

In the drawings, there is shown a tank of the usual construction which is indicated by the numeral 6 and a casing arranged vertically against the tank at one side thereof, the said casing being indicated by the numeral 7. A cable 8 is passed over pulleys 9 one of which is arranged within the tank and the other outwardly thereof and above the casing 7 and at its end within the tank, this cable has connected to it a float- 10 which is designed to rise and fall with the water level within the tank. The connection for the other end of the cable will be presently described.

Secured in any suitable manner upon theunder side of the top of the casing 7 is a block 11 of insulation and upon the under face of this block are secured contact plates 12 and 13 from which lead wires 14 and 15 respectively. A block 16 similar to the block 11 is disposed upon the floor of the casing 7 and upon the upper face of this latter block are located contact plates 17 and 18 which have conductor wires 19 and 20 respectivelyleading therefrom. A wire 21 is secured at its upper end to the contact plate 12 and is drawn taut and secured at its lower end to the plate 17 and a similar wire 22 is secured at its upper and lower ends respectively to the top and floor of the casing and in parallel relation with respect to the wire 21. A weight 23 is provided at its opposite ends with rollers which travels upon the wires 21 and 22 and connected 'to this weight is the other end of the cable 8, the weight being in this manner supported for and up and down movement in opposition to the float 10. Threaded bores 24 and 25 are formed through the weight 23 and threaded rods 26 and 27 are engaged through these bores respectively and are provided with crank handles whereby they may be adjusted for a purpose to be presently made clear. The ends of these rods opposite to the ends at which the crank handles are formed are designed for contact respectively with the contact plates 13 and 18 when the weight is at one or the other limit of its movement in the casing and it will be readily understood that this contact of the rods with the plates serves to close the circuit in which the wires 14 and 15, and 19 and 20 are located.

In the circuit mentioned above, there is interposed an electric bell 28 and a battery 29 and the wires 14 and 20 are joined and lead to one pole of the battery while the wires 15 and .19 are joined and lead to the bell. It

will thus be seen from the foregoing that the circuit will be closed regardless as to whether the tank is empty or full. It will furthermore be understood that the contacts which are carried by the weight may be adjusted to suit the size of the tank or so that the owner may be warned of the water level therein before the tank is full to overflowing or entirely emptied.

What is claimed is A circuit closing device for tank alarms comprising a pair of insulated blocks supported one above the other, contacts fixed upon the blocks, an electrical circuit in which the contacts are located, a signal in the circuit, a wire connecting the corresponding ones of the contacts carried by the blocks, a wire disposed in parallel relation with respect to the first mentioned wire, a weight controlled by the rise and fall of a float within the tank, said weight being guided between the wires and being in electrical contact with the first mentioned wire, and contacts carried by the weight, said contacts being in the form of rods threaded through the weight and provided with crank portions whereby they may be turned and adjusted through the weight substantially as described and for the purpose set forth.

In testimony whereof, I affix my signature, in presence of two witnesses.

GLEN F. ELLIOTT.

Witnesses:

MARY P.TYRE, P. S. SHocKLnY. 

